H15-TFC Shower Panel Instructions (1MB, pdf) L-84: Installation, commissioning, operating and maintenance instructions for Horne shower panels with integral Horne 15 thermostatic mixing valve (TMV) and push button timed flow control. The Horne 15 is UK Water Reg 4 (materials in contact with potable water) and Type 3 Approved TMV compliant to Model Engineering Specification D08 / D 08 Thermostatic Mixing Valves (Healthcare Premises). Revised May 2025. More